sometimes its raised lettering on the face shield. should have a sticker inside the helmet with specifics. sticker on the back is required by law to show DOT/SNELL. arai makes good **** so its almost 100% a snell approved helmet. motorcycle helmet too. thats like a corsair or RRX7
my RRX7 went for like $450 new, its like 3 years old it would fetch like $200 used